Khloe Kardashian is putting her foot down with Tristan Thompson when it comes to footing the bill for their daughter's lavish parties ... something she made clear on True's 4th birthday.
Khloe's approach -- basically, "thanks but no thanks," Tristan -- comes through loud and clear in the latest episode of "The Kardashians." She was throwing a huge birthday bash for their daughter when Kris pulled Khloe aside to let her know Tristan had paid for the whole party behind her back .